From: Ben Pfaff Date: Sat, 1 Jan 2005 19:40:50 +0000 (+0000) Subject: Comment. X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=commitdiff_plain;h=6dca07ec0e8cde38f64f0c9f543b8e52ba169e94 Comment. --- diff --git a/src/userprog/pagedir.c b/src/userprog/pagedir.c index 3f0e9fb..c0a015a 100644 --- a/src/userprog/pagedir.c +++ b/src/userprog/pagedir.c @@ -199,11 +199,11 @@ pagedir_activate (uint32_t *pd) static uint32_t * active_pd (void) { + /* Copy CR3, the page directory base register (PDBR), into + `pd'. + See [IA32-v2a] "MOV--Move to/from Control Registers" and + [IA32-v3] 3.7.5. */ uint32_t *pd; - - /* Copy CR3, the page directory base register (PDBR), into `pd' - for us to examine. See [IA32-v2a] "MOV--Move to/from - Control Registers" and [IA32-v3] 3.7.5. */ asm ("movl %%cr3,%0" : "=r" (pd)); return pd; }